Hydrocarbon-burner.



No. 834,061. l PATBNTED 001:.23, 190s.

' no. KAHN.

BYDRocARBoN BURNER. A-PPLIOTION FILED `11515.28. 1906.

z sums-HEBT 1.

No. 834,061. PATENTED- 00T, 23

' E. o. KAHN.-

HYDRooARBoN BURNER.

APPLICATION FILED FIBRAS, 1906.

SHEETS-snm 2.

n y No.s34,oc1; I.

UNITED STATESPATENT @WEEK EDWARDQWISQONSIN; l y 'i A HYoRocARBoN-BURNEn.

To all whom) it 'may concern: 'i

Be it known that I, EDWARD C. KAHN, residing in Milwaukee, in 'the county of Milwau-f 'kee and State of Wisconsin, have inventedl new and useful Improvements in'Hydrocarbon-Burners, of which the following is a de-f lscription,reference being had to the accom-2 panying drawings, which'are a part of this casing 17 at some distance abovethe bottom specification. l

This invention 'relates to hydrocarbon! burners, and especially to burners adapted forburning the cheaper grades'of kerosene-y oiland the like. l

The invention has for its object to improvey uponexisting burners offthis nature and pro. vide a structurewhich will be strong and durable and highly eflicient in i-ts operation. With the above and other, objects in view the invention 'consists thevdevic'es vherein k-binations of parts, and' all equivalents.

'described and claimed, their parts and com!` f Referring to the accompanying drawings, p

in which like characters of reference indicate the samefparts in the severalviews, Figure 1 is a longitudinal" sectional view of,A the preferred embodiment of this invention for use -Ain ranges or cookingstoves view thereof, apart being broken away for,

Fig'. 2 is a plan cle'arness of illustration. Fig. 3 is a sectional planl view of a portion thereof vwith a part, broken awayandtakenon'the plane of'line "3 3 ofFig.--1. Fig. Llis' a central sectional; "view ofthe spray-nozzle- Fig. r.5 is a plan,

viewthereof, and Fig. 6 is a sectional view of? V4a modified form of the invention as applied to' a heating-stove. y

In' the drawings, 8 represents-'a base-plate.y which is preferably rectangular?, as shown, and is capable ofbeing locatedwithin the fire-box of a range kor cooking-stove by`frest ing upon the grate thereof` or on any other desirable support. A pair of'lshells or casings 9 of the shape of a truncated cone are secured tothe Vbase-plate 8 with their smaller ends downward and/form combustion-chambers. -'The base`-plate 8 is provided with perforations 10, arranged in a circular serieslin the bottom of each ofthe combustion-chambers, and a disk-shaped valve-plate 11 is pivotally mounted on the base-plate'in the vvbot-- torn of` each combustionechamber and `has perforations 12,l adapted to register more or less with theperforations 10' of said base-' plate. handle 13 yof each valve-plate extends through a slot of the casing 9 to afford a meansby which the valve-plate may be.

I turned to vary the degree of registration'of Patented oct. 2a, 1,906. y

v Application-filed February 28.1906. 'Serial No. 303,337.

the perforations.l Afcross-bar 14"*extends of the combustion-Chamber, said cylindrical casing constituting a mixing-chamber witha Standards 16 extend upwardly from I closed top except yfor a "centraly admission"' opening 18 and' provided with an annular Haring deflecting ia'nge '19 at the upper end.

An oil-supply pipe 20, provided with a controlling-valve 21, conducts oil under ,presl sure' fro'in a suitable source of supply,usu'ally an elevated reservoir, and connects with the lower end of a spirally-wound retort-coil 22, which A,fits within one of 'the combustionchambers around the 'mixingchamber and against a series ofradial spacing-ribs 23 on` the casing `9 to hold it out `to contact with said' casing..` The upper 'end of the lretortcoily is connected midway between the two combustion-chambers with the'middle 'of' a has a flaringmou-th 26, suppliedvby a very restricted loriiice 27 from a threaded tubular stem, which is plugged a't its end by means 'of a stopper 28 and has a series'of radial-slots y29, `through which it communicates with the interior Iof the conductor leading thereto.

In operation the oil within the retortecoil 22l is vaporized-bythe heat ywithin the cornbustion-chamber,'so that it is discharged as a ine spreadingspray of oil-ga's'by bothnozzles 25 through the openings 18 in the tops of the mixing-chambers," carrying vair down with it by induction through said openings and becomingl 'thoroughly 'mixed therewith by the eddying currents within the mixing'-` chamber. The mixture passes out' around the lower vedge ofthe mixing-chamber into 'the 'combustion-chamber, where it burns freely with air whichy it drawsl from beneath vthe base-plate through the registering openingslO and 12. In the upward course of the Vburning gases they aredeflected outwardly and somewhat retarded by the flaring flange 19 of the rnixing-chamber-,` so as t'o be spread IOC IIC

and follow the walls of the combustion-chamber where the retort-coil is located, the flame being free to travel entirely around the convolutions of the coil by reason of the space provided between the coil and the casing 9 by the presence of the radial ribs 23. rl.`he amount of air which is admitted to the combustion-chambers may be regulated to suit requirements byturning the valve-plates l1 by means of the projecting handles 13, so as to bring the openings 12 more or less into register with the openings 10. As the retortcoil connects with the nozzle-pipe 23 midway between the burners, the two nozzles will receive the same supply of gas under the same pressure, and consequently the two burners will be equal in their heating effect.

In the modification shown in Fig. 6 the casing 9 of the combustion-chamber is made to constitute the waist of a heating-stove, becoming a portion. of the stove-casing proper, and as thereis butone burner here present the retort-coil connects directly with the single-nozzle connection 24. Furthermore, the base-plate in this construction is bent downwardly to constitute the base of the stove. Otherwise the construction of the burner is the same as the left-hand burner shown in Fig. l. In the heating-stove suitable baflie-plates 30 are provided in the body portion of the stove-frame to defiect the heated gases back and forth and extend their path of travel, so as to utilize their heating effect to the greatest extent practicable.

It will be noted that with this invention the course of the oil or gas is constantly upward from the time it enters the retort-coil until it is discharged through theispray-nozzles, which is a necessary feature in order to avoid the slight explosions due to pockets or traps formed in the passage-way.

The fiaring shape of the combustionchamber casing 9 provides for a graduallyenlarging passage between this casing and the cylindrical mixing-chamber to allow for the gradual expansion of the gases during combustion. By adjusting the valve-plates 4so that the requisite amount of air is admitted for the flow of gas used a blue fiame may be produced in the combustion-chamber having an intense heating effect, which will y enable the stove to perform the same duties as when coal or other fuel is employed.

What I claim asmy invention is 1. In a hydrocarbon-burner, a conical casing forming a combustion-chamber, a cylindrical casing therein constituting a mixingchamber with an inlet-opening at its top and an outlet into the combustion-chamber at its bottom, a retort-coil located within the combustion-chamber4 in the flaring space around the mixing-chamber, a nozzle through which the retort-coil discharges into the inlet-opening of the mixing-chamber, and an annular flange on the casing of the mixing-chamber for defiectinor the fiame outwardly against the retort-coil.

2. In a hydrocarbon-burner, a conical casing forming a combustion-chamber, a cylindrical casing therein constituting a mixinglchamber with an inlet-opening at its top and an outlet into the combustion-chamber at its bottom, a retort-coil located within the combustion-chamber in the liaring space around the mixing-chamber, radial ribs along the walls of the combustion-chamber casing by means of which the retort-coil is spaced from said walls, a nozzle through which the retortcoil discharges into the inlet-opening of the mixing-chamber, and an annular flange on the casing of the mixing-chamber for deflecting the iiame outwardly against the retortcoil.

3. In a hydrocarbon-burner, a casing constituting a combustion-chamber, a base-plate thereon provided with perforations through which air maybe admitted to the combustionchamber, a valve-plate pivotally mounted on the base-plate and provided with perforations to register more or less with the perforations of the base-plate, a casing within, the combustion-chamber and constituting a mixing-chamber with an inlet-opening at its upper end and an outlet-opening into the combustion-chamber between its lower edge andthe bottom of the combustion-chamber, a retort-coil within the combustion-chamber and surrounding the mixing-chamber, and a nozzle through which the retort-coil discharges -into the inlet-opening of the mixing-chamber.

4. In a hydrocarbon-burner, a casing constituting a combustion-Chamber,a base-plate thereon provided with perforations through which air maybe admitted to the combustionchamber, a valve-plate pivotally mounted on the base-plate and provided with perforations to register more or less with the perforations of the base-plate, a handle on the valveplate projecting through the wall of the combustion-chamber by which the valve-plate may be adjusted, a cross-bar extending across the bottom of the combustion-chamber, standards on the cross-bar, a mixing-chamber mounted on the standards at a distance above the bottom of the combustion-chainber to form an outlet-opening between its lower edges and the bottom of the combustion-chamber, said mixmg-chamber being provided with a cover with an inlet-opening therethrough, a retort-coil Within the combustion-chamber and surrounding the mixing-chamber, and a nozzle through which the retort-coil discharges into the inlet-opening of the mixing-chamber.

5. In a hydrocarbon-burner of the multiple type, a base-plate -provided with a series of perforations for each burner unit, a conical casing secured to the base-plate and forming a combustion-chamber for each of the burner units, a valve-plate pivotally mounted on thc ICC IOC

IIO

baselate in the bottom of each combustioncham er and having perforetions to re ister more or less with the perforations ofthe aseplate, a cylindrical casing in each combustionchamber constituting a mixing-chamber with an inlet-opening in its upper end and an outg let-opening formed between its lower edge and the bottom of the combustion-chamber, a retort-coil in one of the combustion-chambers surrounding the mixing-chamber there'- of, and a nozzle-pipe having nozzles to discharge into the inlet-openings of the several mixing-chambers, said retort-coil connecting with the nozzle-pipe at a point equidistant from the nozzles.

In testimony 'whereof I aix my signature in presence of two witnesses.

EDWARD C. KAHN 

